| /* | 
 |  * Copyright (C) 2010 The Android Open Source Project | 
 |  * | 
 |  * Licensed under the Apache License, Version 2.0 (the "License"); | 
 |  * you may not use this file except in compliance with the License. | 
 |  * You may obtain a copy of the License at | 
 |  * | 
 |  *      http://www.apache.org/licenses/LICENSE-2.0 | 
 |  * | 
 |  * Unless required by applicable law or agreed to in writing, software | 
 |  * distributed under the License is distributed on an "AS IS" BASIS, | 
 |  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | 
 |  * See the License for the specific language governing permissions and | 
 |  * limitations under the License. | 
 |  */ | 
 |  | 
 | #define ATRACE_TAG ATRACE_TAG_GRAPHICS | 
 |  | 
 | #include <inttypes.h> | 
 | #include <math.h> | 
 | #include <stdint.h> | 
 | #include <stdio.h> | 
 | #include <stdlib.h> | 
 | #include <string.h> | 
 | #include <sys/types.h> | 
 |  | 
 | #include <utils/Errors.h> | 
 | #include <utils/misc.h> | 
 | #include <utils/NativeHandle.h> | 
 | #include <utils/String8.h> | 
 | #include <utils/Thread.h> | 
 | #include <utils/Trace.h> | 
 | #include <utils/Vector.h> | 
 |  | 
 | #include <ui/GraphicBuffer.h> | 
 |  | 
 | #include <hardware/hardware.h> | 
 | #include <hardware/hwcomposer.h> | 
 |  | 
 | #include <android/configuration.h> | 
 |  | 
 | #include <cutils/log.h> | 
 | #include <cutils/properties.h> | 
 |  | 
 | #include "HWComposer.h" | 
 |  | 
 | #include "../Layer.h"           // needed only for debugging | 
 | #include "../SurfaceFlinger.h" | 
 |  | 
 | namespace android { | 
 |  | 
 | #define MIN_HWC_HEADER_VERSION HWC_HEADER_VERSION | 
 |  | 
 | static uint32_t hwcApiVersion(const hwc_composer_device_1_t* hwc) { | 
 |     uint32_t hwcVersion = hwc->common.version; | 
 |     return hwcVersion & HARDWARE_API_VERSION_2_MAJ_MIN_MASK; | 
 | } | 
 |  | 
 | static uint32_t hwcHeaderVersion(const hwc_composer_device_1_t* hwc) { | 
 |     uint32_t hwcVersion = hwc->common.version; | 
 |     return hwcVersion & HARDWARE_API_VERSION_2_HEADER_MASK; | 
 | } | 
 |  | 
 | static bool hwcHasApiVersion(const hwc_composer_device_1_t* hwc, | 
 |         uint32_t version) { | 
 |     return hwcApiVersion(hwc) >= (version & HARDWARE_API_VERSION_2_MAJ_MIN_MASK); | 
 | } | 
 |  | 
 | // --------------------------------------------------------------------------- | 
 |  | 
 | struct HWComposer::cb_context { | 
 |     struct callbacks : public hwc_procs_t { | 
 |         // these are here to facilitate the transition when adding | 
 |         // new callbacks (an implementation can check for NULL before | 
 |         // calling a new callback). | 
 |         void (*zero[4])(void); | 
 |     }; | 
 |     callbacks procs; | 
 |     HWComposer* hwc; | 
 | }; | 
 |  | 
 | // --------------------------------------------------------------------------- | 
 |  | 
 | HWComposer::HWComposer( | 
 |         const sp<SurfaceFlinger>& flinger, | 
 |         EventHandler& handler) | 
 |     : mFlinger(flinger), | 
 |       mFbDev(0), mHwc(0), mNumDisplays(1), | 
 |       mCBContext(new cb_context), | 
 |       mEventHandler(handler), | 
 |       mDebugForceFakeVSync(false) | 
 | { | 
 |     for (size_t i =0 ; i<MAX_HWC_DISPLAYS ; i++) { | 
 |         mLists[i] = 0; | 
 |     } | 
 |  | 
 |     for (size_t i=0 ; i<HWC_NUM_PHYSICAL_DISPLAY_TYPES ; i++) { | 
 |         mLastHwVSync[i] = 0; | 
 |         mVSyncCounts[i] = 0; | 
 |     } | 
 |  | 
 |     char value[PROPERTY_VALUE_MAX]; | 
 |     property_get("debug.sf.no_hw_vsync", value, "0"); | 
 |     mDebugForceFakeVSync = atoi(value); | 
 |  | 
 |     bool needVSyncThread = true; | 
 |  | 
 |     // Note: some devices may insist that the FB HAL be opened before HWC. | 
 |     int fberr = loadFbHalModule(); | 
 |     loadHwcModule(); | 
 |  | 
 |     if (mFbDev && mHwc && hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1)) { | 
 |         // close FB HAL if we don't needed it. | 
 |         // FIXME: this is temporary until we're not forced to open FB HAL | 
 |         // before HWC. | 
 |         framebuffer_close(mFbDev); | 
 |         mFbDev = NULL; | 
 |     } | 
 |  | 
 |     // If we have no HWC, or a pre-1.1 HWC, an FB dev is mandatory. | 
 |     if ((!mHwc || !hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1)) | 
 |             && !mFbDev) { | 
 |         ALOGE("ERROR: failed to open framebuffer (%s), aborting", | 
 |                 strerror(-fberr)); | 
 |         abort(); | 
 |     } | 
 |  | 
 |     // these display IDs are always reserved | 
 |     for (size_t i=0 ; i<NUM_BUILTIN_DISPLAYS ; i++) { | 
 |         mAllocatedDisplayIDs.markBit(i); | 
 |     } | 
 |  | 
 |     if (mHwc) { | 
 |         ALOGI("Using %s version %u.%u", HWC_HARDWARE_COMPOSER, | 
 |               (hwcApiVersion(mHwc) >> 24) & 0xff, | 
 |               (hwcApiVersion(mHwc) >> 16) & 0xff); | 
 |         if (mHwc->registerProcs) { | 
 |             mCBContext->hwc = this; | 
 |             mCBContext->procs.invalidate = &hook_invalidate; | 
 |             mCBContext->procs.vsync = &hook_vsync; | 
 |             if (hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1)) | 
 |                 mCBContext->procs.hotplug = &hook_hotplug; | 
 |             else | 
 |                 mCBContext->procs.hotplug = NULL; | 
 |             memset(mCBContext->procs.zero, 0, sizeof(mCBContext->procs.zero)); | 
 |             mHwc->registerProcs(mHwc, &mCBContext->procs); | 
 |         } | 
 |  | 
 |         // don't need a vsync thread if we have a hardware composer | 
 |         needVSyncThread = false; | 
 |         // always turn vsync off when we start | 
 |         eventControl(HWC_DISPLAY_PRIMARY, HWC_EVENT_VSYNC, 0); | 
 |  | 
 |         // the number of displays we actually have depends on the | 
 |         // hw composer version | 
 |         if (hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_3)) { | 
 |             // 1.3 adds support for virtual displays | 
 |             mNumDisplays = MAX_HWC_DISPLAYS; | 
 |         } else if (hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1)) { | 
 |             // 1.1 adds support for multiple displays | 
 |             mNumDisplays = NUM_BUILTIN_DISPLAYS; | 
 |         } else { | 
 |             mNumDisplays = 1; | 
 |         } | 
 |     } | 
 |  | 
 |     if (mFbDev) { | 
 |         ALOG_ASSERT(!(mHwc && hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1)), | 
 |                 "should only have fbdev if no hwc or hwc is 1.0"); | 
 |  | 
 |         DisplayData& disp(mDisplayData[HWC_DISPLAY_PRIMARY]); | 
 |         disp.connected = true; | 
 |         disp.format = mFbDev->format; | 
 |         DisplayConfig config = DisplayConfig(); | 
 |         config.width = mFbDev->width; | 
 |         config.height = mFbDev->height; | 
 |         config.xdpi = mFbDev->xdpi; | 
 |         config.ydpi = mFbDev->ydpi; | 
 |         config.refresh = nsecs_t(1e9 / mFbDev->fps); | 
 |         disp.configs.push_back(config); | 
 |         disp.currentConfig = 0; | 
 |     } else if (mHwc) { | 
 |         // here we're guaranteed to have at least HWC 1.1 | 
 |         for (size_t i =0 ; i<NUM_BUILTIN_DISPLAYS ; i++) { | 
 |             queryDisplayProperties(i); | 
 |         } | 
 |     } | 
 |  | 
 |     if (needVSyncThread) { | 
 |         // we don't have VSYNC support, we need to fake it | 
 |         mVSyncThread = new VSyncThread(*this); | 
 |     } | 
 | } | 
 |  | 
 | HWComposer::~HWComposer() { | 
 |     if (mHwc) { | 
 |         eventControl(HWC_DISPLAY_PRIMARY, HWC_EVENT_VSYNC, 0); | 
 |     } | 
 |     if (mVSyncThread != NULL) { | 
 |         mVSyncThread->requestExitAndWait(); | 
 |     } | 
 |     if (mHwc) { | 
 |         hwc_close_1(mHwc); | 
 |     } | 
 |     if (mFbDev) { | 
 |         framebuffer_close(mFbDev); | 
 |     } | 
 |     delete mCBContext; | 
 | } | 
 |  | 
 | // Load and prepare the hardware composer module.  Sets mHwc. | 
 | void HWComposer::loadHwcModule() | 
 | { | 
 |     hw_module_t const* module; | 
 |  | 
 |     if (hw_get_module(HWC_HARDWARE_MODULE_ID, &module) != 0) { | 
 |         ALOGE("%s module not found", HWC_HARDWARE_MODULE_ID); | 
 |         return; | 
 |     } | 
 |  | 
 |     int err = hwc_open_1(module, &mHwc); | 
 |     if (err) { | 
 |         ALOGE("%s device failed to initialize (%s)", | 
 |               HWC_HARDWARE_COMPOSER, strerror(-err)); | 
 |         return; | 
 |     } | 
 |  | 
 |     if (!hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_0) || | 
 |             hwcHeaderVersion(mHwc) < MIN_HWC_HEADER_VERSION || | 
 |             hwcHeaderVersion(mHwc) > HWC_HEADER_VERSION) { | 
 |         ALOGE("%s device version %#x unsupported, will not be used", | 
 |               HWC_HARDWARE_COMPOSER, mHwc->common.version); | 
 |         hwc_close_1(mHwc); | 
 |         mHwc = NULL; | 
 |         return; | 
 |     } | 
 | } | 
 |  | 
 | // Load and prepare the FB HAL, which uses the gralloc module.  Sets mFbDev. | 
 | int HWComposer::loadFbHalModule() | 
 | { | 
 |     hw_module_t const* module; | 
 |  | 
 |     int err = hw_get_module(GRALLOC_HARDWARE_MODULE_ID, &module); | 
 |     if (err != 0) { | 
 |         ALOGE("%s module not found", GRALLOC_HARDWARE_MODULE_ID); | 
 |         return err; | 
 |     } | 
 |  | 
 |     return framebuffer_open(module, &mFbDev); | 
 | } | 
 |  | 
 | status_t HWComposer::initCheck() const { | 
 |     return mHwc ? NO_ERROR : NO_INIT; | 
 | } | 
 |  | 
 | void HWComposer::hook_invalidate(const struct hwc_procs* procs) { | 
 |     cb_context* ctx = reinterpret_cast<cb_context*>( | 
 |             const_cast<hwc_procs_t*>(procs)); | 
 |     ctx->hwc->invalidate(); | 
 | } | 
 |  | 
 | void HWComposer::hook_vsync(const struct hwc_procs* procs, int disp, | 
 |         int64_t timestamp) { | 
 |     cb_context* ctx = reinterpret_cast<cb_context*>( | 
 |             const_cast<hwc_procs_t*>(procs)); | 
 |     ctx->hwc->vsync(disp, timestamp); | 
 | } | 
 |  | 
 | void HWComposer::hook_hotplug(const struct hwc_procs* procs, int disp, | 
 |         int connected) { | 
 |     cb_context* ctx = reinterpret_cast<cb_context*>( | 
 |             const_cast<hwc_procs_t*>(procs)); | 
 |     ctx->hwc->hotplug(disp, connected); | 
 | } | 
 |  | 
 | void HWComposer::invalidate() { | 
 |     mFlinger->repaintEverything(); | 
 | } | 
 |  | 
 | void HWComposer::vsync(int disp, int64_t timestamp) { | 
 |     if (uint32_t(disp) < HWC_NUM_PHYSICAL_DISPLAY_TYPES) { | 
 |         { | 
 |             Mutex::Autolock _l(mLock); | 
 |  | 
 |             // There have been reports of HWCs that signal several vsync events | 
 |             // with the same timestamp when turning the display off and on. This | 
 |             // is a bug in the HWC implementation, but filter the extra events | 
 |             // out here so they don't cause havoc downstream. | 
 |             if (timestamp == mLastHwVSync[disp]) { | 
 |                 ALOGW("Ignoring duplicate VSYNC event from HWC (t=%" PRId64 ")", | 
 |                         timestamp); | 
 |                 return; | 
 |             } | 
 |  | 
 |             mLastHwVSync[disp] = timestamp; | 
 |         } | 
 |  | 
 |         char tag[16]; | 
 |         snprintf(tag, sizeof(tag), "HW_VSYNC_%1u", disp); | 
 |         ATRACE_INT(tag, ++mVSyncCounts[disp] & 1); | 
 |  | 
 |         mEventHandler.onVSyncReceived(disp, timestamp); | 
 |     } | 
 | } | 
 |  | 
 | void HWComposer::hotplug(int disp, int connected) { | 
 |     if (disp >= VIRTUAL_DISPLAY_ID_BASE) { | 
 |         ALOGE("hotplug event received for invalid display: disp=%d connected=%d", | 
 |                 disp, connected); | 
 |         return; | 
 |     } | 
 |     queryDisplayProperties(disp); | 
 |     // Do not teardown or recreate the primary display | 
 |     if (disp != HWC_DISPLAY_PRIMARY) { | 
 |         mEventHandler.onHotplugReceived(disp, bool(connected)); | 
 |     } | 
 | } | 
 |  | 
 | static float getDefaultDensity(uint32_t width, uint32_t height) { | 
 |     // Default density is based on TVs: 1080p displays get XHIGH density, | 
 |     // lower-resolution displays get TV density. Maybe eventually we'll need | 
 |     // to update it for 4K displays, though hopefully those just report | 
 |     // accurate DPI information to begin with. This is also used for virtual | 
 |     // displays and even primary displays with older hwcomposers, so be | 
 |     // careful about orientation. | 
 |  | 
 |     uint32_t h = width < height ? width : height; | 
 |     if (h >= 1080) return ACONFIGURATION_DENSITY_XHIGH; | 
 |     else           return ACONFIGURATION_DENSITY_TV; | 
 | } | 
 |  | 
 | static const uint32_t DISPLAY_ATTRIBUTES[] = { | 
 |     HWC_DISPLAY_VSYNC_PERIOD, | 
 |     HWC_DISPLAY_WIDTH, | 
 |     HWC_DISPLAY_HEIGHT, | 
 |     HWC_DISPLAY_DPI_X, | 
 |     HWC_DISPLAY_DPI_Y, | 
 |     HWC_DISPLAY_COLOR_TRANSFORM, | 
 |     HWC_DISPLAY_NO_ATTRIBUTE, | 
 | }; | 
 | #define NUM_DISPLAY_ATTRIBUTES (sizeof(DISPLAY_ATTRIBUTES) / sizeof(DISPLAY_ATTRIBUTES)[0]) | 
 |  | 
 | static const uint32_t PRE_HWC15_DISPLAY_ATTRIBUTES[] = { | 
 |     HWC_DISPLAY_VSYNC_PERIOD, | 
 |     HWC_DISPLAY_WIDTH, | 
 |     HWC_DISPLAY_HEIGHT, | 
 |     HWC_DISPLAY_DPI_X, | 
 |     HWC_DISPLAY_DPI_Y, | 
 |     HWC_DISPLAY_NO_ATTRIBUTE, | 
 | }; | 
 |  | 
 | status_t HWComposer::queryDisplayProperties(int disp) { | 
 |  | 
 |     LOG_ALWAYS_FATAL_IF(!mHwc || !hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1)); | 
 |  | 
 |     // use zero as default value for unspecified attributes | 
 |     int32_t values[NUM_DISPLAY_ATTRIBUTES - 1]; | 
 |     memset(values, 0, sizeof(values)); | 
 |  | 
 |     const size_t MAX_NUM_CONFIGS = 128; | 
 |     uint32_t configs[MAX_NUM_CONFIGS] = {0}; | 
 |     size_t numConfigs = MAX_NUM_CONFIGS; | 
 |     status_t err = mHwc->getDisplayConfigs(mHwc, disp, configs, &numConfigs); | 
 |     if (err != NO_ERROR) { | 
 |         // this can happen if an unpluggable display is not connected | 
 |         mDisplayData[disp].connected = false; | 
 |         return err; | 
 |     } | 
 |  | 
 |     mDisplayData[disp].currentConfig = 0; | 
 |     for (size_t c = 0; c < numConfigs; ++c) { | 
 |         err = mHwc->getDisplayAttributes(mHwc, disp, configs[c], | 
 |                 DISPLAY_ATTRIBUTES, values); | 
 |         // If this is a pre-1.5 HWC, it may not know about color transform, so | 
 |         // try again with a smaller set of attributes | 
 |         if (err != NO_ERROR) { | 
 |             err = mHwc->getDisplayAttributes(mHwc, disp, configs[c], | 
 |                     PRE_HWC15_DISPLAY_ATTRIBUTES, values); | 
 |         } | 
 |         if (err != NO_ERROR) { | 
 |             // we can't get this display's info. turn it off. | 
 |             mDisplayData[disp].connected = false; | 
 |             return err; | 
 |         } | 
 |  | 
 |         DisplayConfig config = DisplayConfig(); | 
 |         for (size_t i = 0; i < NUM_DISPLAY_ATTRIBUTES - 1; i++) { | 
 |             switch (DISPLAY_ATTRIBUTES[i]) { | 
 |                 case HWC_DISPLAY_VSYNC_PERIOD: | 
 |                     config.refresh = nsecs_t(values[i]); | 
 |                     break; | 
 |                 case HWC_DISPLAY_WIDTH: | 
 |                     config.width = values[i]; | 
 |                     break; | 
 |                 case HWC_DISPLAY_HEIGHT: | 
 |                     config.height = values[i]; | 
 |                     break; | 
 |                 case HWC_DISPLAY_DPI_X: | 
 |                     config.xdpi = values[i] / 1000.0f; | 
 |                     break; | 
 |                 case HWC_DISPLAY_DPI_Y: | 
 |                     config.ydpi = values[i] / 1000.0f; | 
 |                     break; | 
 |                 case HWC_DISPLAY_COLOR_TRANSFORM: | 
 |                     config.colorTransform = values[i]; | 
 |                     break; | 
 |                 default: | 
 |                     ALOG_ASSERT(false, "unknown display attribute[%zu] %#x", | 
 |                             i, DISPLAY_ATTRIBUTES[i]); | 
 |                     break; | 
 |             } | 
 |         } | 
 |  | 
 |         if (config.xdpi == 0.0f || config.ydpi == 0.0f) { | 
 |             float dpi = getDefaultDensity(config.width, config.height); | 
 |             config.xdpi = dpi; | 
 |             config.ydpi = dpi; | 
 |         } | 
 |  | 
 |         mDisplayData[disp].configs.push_back(config); | 
 |     } | 
 |  | 
 |     // FIXME: what should we set the format to? | 
 |     mDisplayData[disp].format = HAL_PIXEL_FORMAT_RGBA_8888; | 
 |     mDisplayData[disp].connected = true; | 
 |     return NO_ERROR; | 
 | } | 
 |  | 
 | status_t HWComposer::setVirtualDisplayProperties(int32_t id, | 
 |         uint32_t w, uint32_t h, uint32_t format) { | 
 |     if (id < VIRTUAL_DISPLAY_ID_BASE || id >= int32_t(mNumDisplays) || | 
 |             !mAllocatedDisplayIDs.hasBit(id)) { | 
 |         return BAD_INDEX; | 
 |     } | 
 |     size_t configId = mDisplayData[id].currentConfig; | 
 |     mDisplayData[id].format = format; | 
 |     DisplayConfig& config = mDisplayData[id].configs.editItemAt(configId); | 
 |     config.width = w; | 
 |     config.height = h; | 
 |     config.xdpi = config.ydpi = getDefaultDensity(w, h); | 
 |     return NO_ERROR; | 
 | } | 
 |  | 
 | int32_t HWComposer::allocateDisplayId() { | 
 |     if (mAllocatedDisplayIDs.count() >= mNumDisplays) { | 
 |         return NO_MEMORY; | 
 |     } | 
 |     int32_t id = mAllocatedDisplayIDs.firstUnmarkedBit(); | 
 |     mAllocatedDisplayIDs.markBit(id); | 
 |     mDisplayData[id].connected = true; | 
 |     mDisplayData[id].configs.resize(1); | 
 |     mDisplayData[id].currentConfig = 0; | 
 |     return id; | 
 | } | 
 |  | 
 | status_t HWComposer::freeDisplayId(int32_t id) { | 
 |     if (id < NUM_BUILTIN_DISPLAYS) { | 
 |         // cannot free the reserved IDs | 
 |         return BAD_VALUE; | 
 |     } | 
 |     if (uint32_t(id)>31 || !mAllocatedDisplayIDs.hasBit(id)) { | 
 |         return BAD_INDEX; | 
 |     } | 
 |     mAllocatedDisplayIDs.clearBit(id); | 
 |     mDisplayData[id].connected = false; | 
 |     return NO_ERROR; | 
 | } | 
 |  | 
 | nsecs_t HWComposer::getRefreshTimestamp(int disp) const { | 
 |     // this returns the last refresh timestamp. | 
 |     // if the last one is not available, we estimate it based on | 
 |     // the refresh period and whatever closest timestamp we have. | 
 |     Mutex::Autolock _l(mLock); | 
 |     nsecs_t now = systemTime(CLOCK_MONOTONIC); | 
 |     size_t configId = mDisplayData[disp].currentConfig; | 
 |     return now - ((now - mLastHwVSync[disp]) % | 
 |             mDisplayData[disp].configs[configId].refresh); | 
 | } | 
 |  | 
 | sp<Fence> HWComposer::getDisplayFence(int disp) const { | 
 |     return mDisplayData[disp].lastDisplayFence; | 
 | } | 
 |  | 
 | uint32_t HWComposer::getFormat(int disp) const { | 
 |     if (static_cast<uint32_t>(disp) >= MAX_HWC_DISPLAYS || !mAllocatedDisplayIDs.hasBit(disp)) { | 
 |         return HAL_PIXEL_FORMAT_RGBA_8888; | 
 |     } else { | 
 |         return mDisplayData[disp].format; | 
 |     } | 
 | } | 
 |  | 
 | bool HWComposer::isConnected(int disp) const { | 
 |     return mDisplayData[disp].connected; | 
 | } | 
 |  | 
 | uint32_t HWComposer::getWidth(int disp) const { | 
 |     size_t currentConfig = mDisplayData[disp].currentConfig; | 
 |     return mDisplayData[disp].configs[currentConfig].width; | 
 | } | 
 |  | 
 | uint32_t HWComposer::getHeight(int disp) const { | 
 |     size_t currentConfig = mDisplayData[disp].currentConfig; | 
 |     return mDisplayData[disp].configs[currentConfig].height; | 
 | } | 
 |  | 
 | float HWComposer::getDpiX(int disp) const { | 
 |     size_t currentConfig = mDisplayData[disp].currentConfig; | 
 |     return mDisplayData[disp].configs[currentConfig].xdpi; | 
 | } | 
 |  | 
 | float HWComposer::getDpiY(int disp) const { | 
 |     size_t currentConfig = mDisplayData[disp].currentConfig; | 
 |     return mDisplayData[disp].configs[currentConfig].ydpi; | 
 | } | 
 |  | 
 | nsecs_t HWComposer::getRefreshPeriod(int disp) const { | 
 |     size_t currentConfig = mDisplayData[disp].currentConfig; | 
 |     return mDisplayData[disp].configs[currentConfig].refresh; | 
 | } | 
 |  | 
 | const Vector<HWComposer::DisplayConfig>& HWComposer::getConfigs(int disp) const { | 
 |     return mDisplayData[disp].configs; | 
 | } | 
 |  | 
 | size_t HWComposer::getCurrentConfig(int disp) const { | 
 |     return mDisplayData[disp].currentConfig; | 
 | } | 
 |  | 
 | void HWComposer::eventControl(int disp, int event, int enabled) { | 
 |     if (uint32_t(disp)>31 || !mAllocatedDisplayIDs.hasBit(disp)) { | 
 |         ALOGD("eventControl ignoring event %d on unallocated disp %d (en=%d)", | 
 |               event, disp, enabled); | 
 |         return; | 
 |     } | 
 |     if (event != EVENT_VSYNC) { | 
 |         ALOGW("eventControl got unexpected event %d (disp=%d en=%d)", | 
 |               event, disp, enabled); | 
 |         return; | 
 |     } | 
 |     status_t err = NO_ERROR; | 
 |     if (mHwc && !mDebugForceFakeVSync) { | 
 |         // NOTE: we use our own internal lock here because we have to call | 
 |         // into the HWC with the lock held, and we want to make sure | 
 |         // that even if HWC blocks (which it shouldn't), it won't | 
 |         // affect other threads. | 
 |         Mutex::Autolock _l(mEventControlLock); | 
 |         const int32_t eventBit = 1UL << event; | 
 |         const int32_t newValue = enabled ? eventBit : 0; | 
 |         const int32_t oldValue = mDisplayData[disp].events & eventBit; | 
 |         if (newValue != oldValue) { | 
 |             ATRACE_CALL(); | 
 |             err = mHwc->eventControl(mHwc, disp, event, enabled); | 
 |             if (!err) { | 
 |                 int32_t& events(mDisplayData[disp].events); | 
 |                 events = (events & ~eventBit) | newValue; | 
 |  | 
 |                 char tag[16]; | 
 |                 snprintf(tag, sizeof(tag), "HW_VSYNC_ON_%1u", disp); | 
 |                 ATRACE_INT(tag, enabled); | 
 |             } | 
 |         } | 
 |         // error here should not happen -- not sure what we should | 
 |         // do if it does. | 
 |         ALOGE_IF(err, "eventControl(%d, %d) failed %s", | 
 |                 event, enabled, strerror(-err)); | 
 |     } | 
 |  | 
 |     if (err == NO_ERROR && mVSyncThread != NULL) { | 
 |         mVSyncThread->setEnabled(enabled); | 
 |     } | 
 | } | 
 |  | 
 | status_t HWComposer::createWorkList(int32_t id, size_t numLayers) { | 
 |     if (uint32_t(id)>31 || !mAllocatedDisplayIDs.hasBit(id)) { | 
 |         return BAD_INDEX; | 
 |     } | 
 |  | 
 |     if (mHwc) { | 
 |         DisplayData& disp(mDisplayData[id]); | 
 |         if (hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1)) { | 
 |             // we need space for the HWC_FRAMEBUFFER_TARGET | 
 |             numLayers++; | 
 |         } | 
 |         if (disp.capacity < numLayers || disp.list == NULL) { | 
 |             size_t size = sizeof(hwc_display_contents_1_t) | 
 |                     + numLayers * sizeof(hwc_layer_1_t); | 
 |             free(disp.list); | 
 |             disp.list = (hwc_display_contents_1_t*)malloc(size); | 
 |             disp.capacity = numLayers; | 
 |         } | 
 |         if (hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1)) { | 
 |             disp.framebufferTarget = &disp.list->hwLayers[numLayers - 1]; | 
 |             memset(disp.framebufferTarget, 0, sizeof(hwc_layer_1_t)); | 
 |             const DisplayConfig& currentConfig = | 
 |                     disp.configs[disp.currentConfig]; | 
 |             const hwc_rect_t r = { 0, 0, | 
 |                     (int) currentConfig.width, (int) currentConfig.height }; | 
 |             disp.framebufferTarget->compositionType = HWC_FRAMEBUFFER_TARGET; | 
 |             disp.framebufferTarget->hints = 0; | 
 |             disp.framebufferTarget->flags = 0; | 
 |             disp.framebufferTarget->handle = disp.fbTargetHandle; | 
 |             disp.framebufferTarget->transform = 0; | 
 |             disp.framebufferTarget->blending = HWC_BLENDING_PREMULT; | 
 |             if (hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_3)) { | 
 |                 disp.framebufferTarget->sourceCropf.left = 0; | 
 |                 disp.framebufferTarget->sourceCropf.top = 0; | 
 |                 disp.framebufferTarget->sourceCropf.right = | 
 |                         currentConfig.width; | 
 |                 disp.framebufferTarget->sourceCropf.bottom = | 
 |                         currentConfig.height; | 
 |             } else { | 
 |                 disp.framebufferTarget->sourceCrop = r; | 
 |             } | 
 |             disp.framebufferTarget->displayFrame = r; | 
 |             disp.framebufferTarget->visibleRegionScreen.numRects = 1; | 
 |             disp.framebufferTarget->visibleRegionScreen.rects = | 
 |                 &disp.framebufferTarget->displayFrame; | 
 |             disp.framebufferTarget->acquireFenceFd = -1; | 
 |             disp.framebufferTarget->releaseFenceFd = -1; | 
 |             disp.framebufferTarget->planeAlpha = 0xFF; | 
 |         } | 
 |         disp.list->retireFenceFd = -1; | 
 |         disp.list->flags = HWC_GEOMETRY_CHANGED; | 
 |         disp.list->numHwLayers = numLayers; | 
 |     } | 
 |     return NO_ERROR; | 
 | } | 
 |  | 
 | status_t HWComposer::setFramebufferTarget(int32_t id, | 
 |         const sp<Fence>& acquireFence, const sp<GraphicBuffer>& buf) { | 
 |     if (uint32_t(id)>31 || !mAllocatedDisplayIDs.hasBit(id)) { | 
 |         return BAD_INDEX; | 
 |     } | 
 |     DisplayData& disp(mDisplayData[id]); | 
 |     if (!disp.framebufferTarget) { | 
 |         // this should never happen, but apparently eglCreateWindowSurface() | 
 |         // triggers a Surface::queueBuffer()  on some | 
 |         // devices (!?) -- log and ignore. | 
 |         ALOGE("HWComposer: framebufferTarget is null"); | 
 |         return NO_ERROR; | 
 |     } | 
 |  | 
 |     int acquireFenceFd = -1; | 
 |     if (acquireFence->isValid()) { | 
 |         acquireFenceFd = acquireFence->dup(); | 
 |     } | 
 |  | 
 |     // ALOGD("fbPost: handle=%p, fence=%d", buf->handle, acquireFenceFd); | 
 |     disp.fbTargetHandle = buf->handle; | 
 |     disp.framebufferTarget->handle = disp.fbTargetHandle; | 
 |     disp.framebufferTarget->acquireFenceFd = acquireFenceFd; | 
 |     return NO_ERROR; | 
 | } | 
 |  | 
 | status_t HWComposer::prepare() { | 
 |     Mutex::Autolock _l(mDisplayLock); | 
 |     for (size_t i=0 ; i<mNumDisplays ; i++) { | 
 |         DisplayData& disp(mDisplayData[i]); | 
 |         if (disp.framebufferTarget) { | 
 |             // make sure to reset the type to HWC_FRAMEBUFFER_TARGET | 
 |             // DO NOT reset the handle field to NULL, because it's possible | 
 |             // that we have nothing to redraw (eg: eglSwapBuffers() not called) | 
 |             // in which case, we should continue to use the same buffer. | 
 |             LOG_FATAL_IF(disp.list == NULL); | 
 |             disp.framebufferTarget->compositionType = HWC_FRAMEBUFFER_TARGET; | 
 |         } | 
 |         if (!disp.connected && disp.list != NULL) { | 
 |             ALOGW("WARNING: disp %zu: connected, non-null list, layers=%zu", | 
 |                   i, disp.list->numHwLayers); | 
 |         } | 
 |         mLists[i] = disp.list; | 
 |         if (mLists[i]) { | 
 |             if (hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_3)) { | 
 |                 mLists[i]->outbuf = disp.outbufHandle; | 
 |                 mLists[i]->outbufAcquireFenceFd = -1; | 
 |             } else if (hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1)) { | 
 |                 // garbage data to catch improper use | 
 |                 mLists[i]->dpy = (hwc_display_t)0xDEADBEEF; | 
 |                 mLists[i]->sur = (hwc_surface_t)0xDEADBEEF; | 
 |             } else { | 
 |                 mLists[i]->dpy = EGL_NO_DISPLAY; | 
 |                 mLists[i]->sur = EGL_NO_SURFACE; | 
 |             } | 
 |         } | 
 |     } | 
 |  | 
 |     int err = mHwc->prepare(mHwc, mNumDisplays, mLists); | 
 |     ALOGE_IF(err, "HWComposer: prepare failed (%s)", strerror(-err)); | 
 |  | 
 |     if (err == NO_ERROR) { | 
 |         // here we're just making sure that "skip" layers are set | 
 |         // to HWC_FRAMEBUFFER and we're also counting how many layers | 
 |         // we have of each type. | 
 |         // | 
 |         // If there are no window layers, we treat the display has having FB | 
 |         // composition, because SurfaceFlinger will use GLES to draw the | 
 |         // wormhole region. | 
 |         for (size_t i=0 ; i<mNumDisplays ; i++) { | 
 |             DisplayData& disp(mDisplayData[i]); | 
 |             disp.hasFbComp = false; | 
 |             disp.hasOvComp = false; | 
 |             if (disp.list) { | 
 |                 for (size_t i=0 ; i<disp.list->numHwLayers ; i++) { | 
 |                     hwc_layer_1_t& l = disp.list->hwLayers[i]; | 
 |  | 
 |                     //ALOGD("prepare: %d, type=%d, handle=%p", | 
 |                     //        i, l.compositionType, l.handle); | 
 |  | 
 |                     if (l.flags & HWC_SKIP_LAYER) { | 
 |                         l.compositionType = HWC_FRAMEBUFFER; | 
 |                     } | 
 |                     if (l.compositionType == HWC_FRAMEBUFFER) { | 
 |                         disp.hasFbComp = true; | 
 |                     } | 
 |                     if (l.compositionType == HWC_OVERLAY) { | 
 |                         disp.hasOvComp = true; | 
 |                     } | 
 |                     if (l.compositionType == HWC_CURSOR_OVERLAY) { | 
 |                         disp.hasOvComp = true; | 
 |                     } | 
 |                 } | 
 |                 if (disp.list->numHwLayers == (disp.framebufferTarget ? 1 : 0)) { | 
 |                     disp.hasFbComp = true; | 
 |                 } | 
 |             } else { | 
 |                 disp.hasFbComp = true; | 
 |             } | 
 |         } | 
 |     } | 
 |     return (status_t)err; | 
 | } | 
 |  | 
 | bool HWComposer::hasHwcComposition(int32_t id) const { | 
 |     if (!mHwc || uint32_t(id)>31 || !mAllocatedDisplayIDs.hasBit(id)) | 
 |         return false; | 
 |     return mDisplayData[id].hasOvComp; | 
 | } | 
 |  | 
 | bool HWComposer::hasGlesComposition(int32_t id) const { | 
 |     if (!mHwc || uint32_t(id)>31 || !mAllocatedDisplayIDs.hasBit(id)) | 
 |         return true; | 
 |     return mDisplayData[id].hasFbComp; | 
 | } | 
 |  | 
 | sp<Fence> HWComposer::getAndResetReleaseFence(int32_t id) { | 
 |     if (uint32_t(id)>31 || !mAllocatedDisplayIDs.hasBit(id)) | 
 |         return Fence::NO_FENCE; | 
 |  | 
 |     int fd = INVALID_OPERATION; | 
 |     if (mHwc && hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1)) { | 
 |         const DisplayData& disp(mDisplayData[id]); | 
 |         if (disp.framebufferTarget) { | 
 |             fd = disp.framebufferTarget->releaseFenceFd; | 
 |             disp.framebufferTarget->acquireFenceFd = -1; | 
 |             disp.framebufferTarget->releaseFenceFd = -1; | 
 |         } | 
 |     } | 
 |     return fd >= 0 ? new Fence(fd) : Fence::NO_FENCE; | 
 | } | 
 |  | 
 | status_t HWComposer::commit() { | 
 |     int err = NO_ERROR; | 
 |     if (mHwc) { | 
 |         if (!hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1)) { | 
 |             // On version 1.0, the OpenGL ES target surface is communicated | 
 |             // by the (dpy, sur) fields and we are guaranteed to have only | 
 |             // a single display. | 
 |             mLists[0]->dpy = eglGetCurrentDisplay(); | 
 |             mLists[0]->sur = eglGetCurrentSurface(EGL_DRAW); | 
 |         } | 
 |  | 
 |         for (size_t i=VIRTUAL_DISPLAY_ID_BASE; i<mNumDisplays; i++) { | 
 |             DisplayData& disp(mDisplayData[i]); | 
 |             if (disp.outbufHandle) { | 
 |                 mLists[i]->outbuf = disp.outbufHandle; | 
 |                 mLists[i]->outbufAcquireFenceFd = | 
 |                         disp.outbufAcquireFence->dup(); | 
 |             } | 
 |         } | 
 |  | 
 |         err = mHwc->set(mHwc, mNumDisplays, mLists); | 
 |  | 
 |         for (size_t i=0 ; i<mNumDisplays ; i++) { | 
 |             DisplayData& disp(mDisplayData[i]); | 
 |             disp.lastDisplayFence = disp.lastRetireFence; | 
 |             disp.lastRetireFence = Fence::NO_FENCE; | 
 |             if (disp.list) { | 
 |                 if (disp.list->retireFenceFd != -1) { | 
 |                     disp.lastRetireFence = new Fence(disp.list->retireFenceFd); | 
 |                     disp.list->retireFenceFd = -1; | 
 |                 } | 
 |                 disp.list->flags &= ~HWC_GEOMETRY_CHANGED; | 
 |             } | 
 |         } | 
 |     } | 
 |     return (status_t)err; | 
 | } | 
 |  | 
 | status_t HWComposer::setPowerMode(int disp, int mode) { | 
 |     LOG_FATAL_IF(disp >= VIRTUAL_DISPLAY_ID_BASE); | 
 |     if (mHwc) { | 
 |         if (mode == HWC_POWER_MODE_OFF) { | 
 |             eventControl(disp, HWC_EVENT_VSYNC, 0); | 
 |         } | 
 |         if (hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_4)) { | 
 |             return (status_t)mHwc->setPowerMode(mHwc, disp, mode); | 
 |         } else { | 
 |             return (status_t)mHwc->blank(mHwc, disp, | 
 |                     mode == HWC_POWER_MODE_OFF ? 1 : 0); | 
 |         } | 
 |     } | 
 |     return NO_ERROR; | 
 | } | 
 |  | 
 | status_t HWComposer::setActiveConfig(int disp, int mode) { | 
 |     LOG_FATAL_IF(disp >= VIRTUAL_DISPLAY_ID_BASE); | 
 |     DisplayData& dd(mDisplayData[disp]); | 
 |     dd.currentConfig = mode; | 
 |     if (mHwc && hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_4)) { | 
 |         return (status_t)mHwc->setActiveConfig(mHwc, disp, mode); | 
 |     } else { | 
 |         LOG_FATAL_IF(mode != 0); | 
 |     } | 
 |     return NO_ERROR; | 
 | } | 
 |  | 
 | void HWComposer::disconnectDisplay(int disp) { | 
 |     LOG_ALWAYS_FATAL_IF(disp < 0 || disp == HWC_DISPLAY_PRIMARY); | 
 |     DisplayData& dd(mDisplayData[disp]); | 
 |     free(dd.list); | 
 |     dd.list = NULL; | 
 |     dd.framebufferTarget = NULL;    // points into dd.list | 
 |     dd.fbTargetHandle = NULL; | 
 |     dd.outbufHandle = NULL; | 
 |     dd.lastRetireFence = Fence::NO_FENCE; | 
 |     dd.lastDisplayFence = Fence::NO_FENCE; | 
 |     dd.outbufAcquireFence = Fence::NO_FENCE; | 
 |     // clear all the previous configs and repopulate when a new | 
 |     // device is added | 
 |     dd.configs.clear(); | 
 | } | 
 |  | 
 | int HWComposer::getVisualID() const { | 
 |     if (mHwc && hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1)) { | 
 |         // FIXME: temporary hack until HAL_PIXEL_FORMAT_IMPLEMENTATION_DEFINED | 
 |         // is supported by the implementation. we can only be in this case | 
 |         // if we have HWC 1.1 | 
 |         return HAL_PIXEL_FORMAT_RGBA_8888; | 
 |         //return HAL_PIXEL_FORMAT_IMPLEMENTATION_DEFINED; | 
 |     } else { | 
 |         return mFbDev->format; | 
 |     } | 
 | } | 
 |  | 
 | bool HWComposer::supportsFramebufferTarget() const { | 
 |     return (mHwc && hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1)); | 
 | } | 
 |  | 
 | int HWComposer::fbPost(int32_t id, | 
 |         const sp<Fence>& acquireFence, const sp<GraphicBuffer>& buffer) { | 
 |     if (mHwc && hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1)) { | 
 |         return setFramebufferTarget(id, acquireFence, buffer); | 
 |     } else { | 
 |         acquireFence->waitForever("HWComposer::fbPost"); | 
 |         return mFbDev->post(mFbDev, buffer->handle); | 
 |     } | 
 | } | 
 |  | 
 | int HWComposer::fbCompositionComplete() { | 
 |     if (mHwc && hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1)) | 
 |         return NO_ERROR; | 
 |  | 
 |     if (mFbDev->compositionComplete) { | 
 |         return mFbDev->compositionComplete(mFbDev); | 
 |     } else { | 
 |         return INVALID_OPERATION; | 
 |     } | 
 | } | 
 |  | 
 | void HWComposer::fbDump(String8& result) { | 
 |     if (mFbDev && mFbDev->common.version >= 1 && mFbDev->dump) { | 
 |         const size_t SIZE = 4096; | 
 |         char buffer[SIZE]; | 
 |         mFbDev->dump(mFbDev, buffer, SIZE); | 
 |         result.append(buffer); | 
 |     } | 
 | } | 
 |  | 
 | status_t HWComposer::setOutputBuffer(int32_t id, const sp<Fence>& acquireFence, | 
 |         const sp<GraphicBuffer>& buf) { | 
 |     if (uint32_t(id)>31 || !mAllocatedDisplayIDs.hasBit(id)) | 
 |         return BAD_INDEX; | 
 |     if (id < VIRTUAL_DISPLAY_ID_BASE) | 
 |         return INVALID_OPERATION; | 
 |  | 
 |     DisplayData& disp(mDisplayData[id]); | 
 |     disp.outbufHandle = buf->handle; | 
 |     disp.outbufAcquireFence = acquireFence; | 
 |     return NO_ERROR; | 
 | } | 
 |  | 
 | sp<Fence> HWComposer::getLastRetireFence(int32_t id) const { | 
 |     if (uint32_t(id)>31 || !mAllocatedDisplayIDs.hasBit(id)) | 
 |         return Fence::NO_FENCE; | 
 |     return mDisplayData[id].lastRetireFence; | 
 | } | 
 |  | 
 | status_t HWComposer::setCursorPositionAsync(int32_t id, const Rect& pos) | 
 | { | 
 |     if (mHwc->setCursorPositionAsync) { | 
 |         return (status_t)mHwc->setCursorPositionAsync(mHwc, id, pos.left, pos.top); | 
 |     } | 
 |     else { | 
 |         return NO_ERROR; | 
 |     } | 
 | } | 
 |  | 
 | /* | 
 |  * Helper template to implement a concrete HWCLayer | 
 |  * This holds the pointer to the concrete hwc layer type | 
 |  * and implements the "iterable" side of HWCLayer. | 
 |  */ | 
 | template<typename CONCRETE, typename HWCTYPE> | 
 | class Iterable : public HWComposer::HWCLayer { | 
 | protected: | 
 |     HWCTYPE* const mLayerList; | 
 |     HWCTYPE* mCurrentLayer; | 
 |     Iterable(HWCTYPE* layer) : mLayerList(layer), mCurrentLayer(layer), | 
 |             mIndex(0) { } | 
 |     inline HWCTYPE const * getLayer() const { return mCurrentLayer; } | 
 |     inline HWCTYPE* getLayer() { return mCurrentLayer; } | 
 |     virtual ~Iterable() { } | 
 |     size_t mIndex; | 
 | private: | 
 |     // returns a copy of ourselves | 
 |     virtual HWComposer::HWCLayer* dup() { | 
 |         return new CONCRETE( static_cast<const CONCRETE&>(*this) ); | 
 |     } | 
 |     virtual status_t setLayer(size_t index) { | 
 |         mIndex = index; | 
 |         mCurrentLayer = &mLayerList[index]; | 
 |         return NO_ERROR; | 
 |     } | 
 | }; | 
 |  | 
 | /* | 
 |  * Concrete implementation of HWCLayer for HWC_DEVICE_API_VERSION_1_0. | 
 |  * This implements the HWCLayer side of HWCIterableLayer. | 
 |  */ | 
 | class HWCLayerVersion1 : public Iterable<HWCLayerVersion1, hwc_layer_1_t> { | 
 |     struct hwc_composer_device_1* mHwc; | 
 | public: | 
 |     HWCLayerVersion1(struct hwc_composer_device_1* hwc, hwc_layer_1_t* layer, | 
 |             Vector<Region>* visibleRegions, | 
 |             Vector<Region>* surfaceDamageRegions) | 
 |         : Iterable<HWCLayerVersion1, hwc_layer_1_t>(layer), mHwc(hwc), | 
 |           mVisibleRegions(visibleRegions), | 
 |           mSurfaceDamageRegions(surfaceDamageRegions) {} | 
 |  | 
 |     virtual int32_t getCompositionType() const { | 
 |         return getLayer()->compositionType; | 
 |     } | 
 |     virtual uint32_t getHints() const { | 
 |         return getLayer()->hints; | 
 |     } | 
 |     virtual sp<Fence> getAndResetReleaseFence() { | 
 |         int fd = getLayer()->releaseFenceFd; | 
 |         getLayer()->releaseFenceFd = -1; | 
 |         return fd >= 0 ? new Fence(fd) : Fence::NO_FENCE; | 
 |     } | 
 |     virtual void setAcquireFenceFd(int fenceFd) { | 
 |         getLayer()->acquireFenceFd = fenceFd; | 
 |     } | 
 |     virtual void setPerFrameDefaultState() { | 
 |         //getLayer()->compositionType = HWC_FRAMEBUFFER; | 
 |     } | 
 |     virtual void setPlaneAlpha(uint8_t alpha) { | 
 |         if (hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_2)) { | 
 |             getLayer()->planeAlpha = alpha; | 
 |         } else { | 
 |             if (alpha < 0xFF) { | 
 |                 getLayer()->flags |= HWC_SKIP_LAYER; | 
 |             } | 
 |         } | 
 |     } | 
 |     virtual void setDefaultState() { | 
 |         hwc_layer_1_t* const l = getLayer(); | 
 |         l->compositionType = HWC_FRAMEBUFFER; | 
 |         l->hints = 0; | 
 |         l->flags = HWC_SKIP_LAYER; | 
 |         l->handle = 0; | 
 |         l->transform = 0; | 
 |         l->blending = HWC_BLENDING_NONE; | 
 |         l->visibleRegionScreen.numRects = 0; | 
 |         l->visibleRegionScreen.rects = NULL; | 
 |         l->acquireFenceFd = -1; | 
 |         l->releaseFenceFd = -1; | 
 |         l->planeAlpha = 0xFF; | 
 |     } | 
 |     virtual void setSkip(bool skip) { | 
 |         if (skip) { | 
 |             getLayer()->flags |= HWC_SKIP_LAYER; | 
 |         } else { | 
 |             getLayer()->flags &= ~HWC_SKIP_LAYER; | 
 |         } | 
 |     } | 
 |     virtual void setIsCursorLayerHint(bool isCursor) { | 
 |         if (hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_4)) { | 
 |             if (isCursor) { | 
 |                 getLayer()->flags |= HWC_IS_CURSOR_LAYER; | 
 |             } | 
 |             else { | 
 |                 getLayer()->flags &= ~HWC_IS_CURSOR_LAYER; | 
 |             } | 
 |         } | 
 |     } | 
 |     virtual void setBlending(uint32_t blending) { | 
 |         getLayer()->blending = blending; | 
 |     } | 
 |     virtual void setTransform(uint32_t transform) { | 
 |         getLayer()->transform = transform; | 
 |     } | 
 |     virtual void setFrame(const Rect& frame) { | 
 |         getLayer()->displayFrame = reinterpret_cast<hwc_rect_t const&>(frame); | 
 |     } | 
 |     virtual void setCrop(const FloatRect& crop) { | 
 |         if (hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_3)) { | 
 |             getLayer()->sourceCropf = reinterpret_cast<hwc_frect_t const&>(crop); | 
 |         } else { | 
 |             /* | 
 |              * Since h/w composer didn't support a flot crop rect before version 1.3, | 
 |              * using integer coordinates instead produces a different output from the GL code in | 
 |              * Layer::drawWithOpenGL(). The difference can be large if the buffer crop to | 
 |              * window size ratio is large and a window crop is defined | 
 |              * (i.e.: if we scale the buffer a lot and we also crop it with a window crop). | 
 |              */ | 
 |             hwc_rect_t& r = getLayer()->sourceCrop; | 
 |             r.left  = int(ceilf(crop.left)); | 
 |             r.top   = int(ceilf(crop.top)); | 
 |             r.right = int(floorf(crop.right)); | 
 |             r.bottom= int(floorf(crop.bottom)); | 
 |         } | 
 |     } | 
 |     virtual void setVisibleRegionScreen(const Region& reg) { | 
 |         hwc_region_t& visibleRegion = getLayer()->visibleRegionScreen; | 
 |         mVisibleRegions->editItemAt(mIndex) = reg; | 
 |         visibleRegion.rects = reinterpret_cast<hwc_rect_t const *>( | 
 |                 mVisibleRegions->itemAt(mIndex).getArray( | 
 |                 &visibleRegion.numRects)); | 
 |     } | 
 |     virtual void setSurfaceDamage(const Region& reg) { | 
 |         if (!hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_5)) { | 
 |             return; | 
 |         } | 
 |         hwc_region_t& surfaceDamage = getLayer()->surfaceDamage; | 
 |         // We encode default full-screen damage as INVALID_RECT upstream, but as | 
 |         // 0 rects for HWComposer | 
 |         if (reg.isRect() && reg.getBounds() == Rect::INVALID_RECT) { | 
 |             surfaceDamage.numRects = 0; | 
 |             surfaceDamage.rects = NULL; | 
 |             return; | 
 |         } | 
 |         mSurfaceDamageRegions->editItemAt(mIndex) = reg; | 
 |         surfaceDamage.rects = reinterpret_cast<hwc_rect_t const *>( | 
 |                 mSurfaceDamageRegions->itemAt(mIndex).getArray( | 
 |                 &surfaceDamage.numRects)); | 
 |     } | 
 |     virtual void setSidebandStream(const sp<NativeHandle>& stream) { | 
 |         ALOG_ASSERT(stream->handle() != NULL); | 
 |         getLayer()->compositionType = HWC_SIDEBAND; | 
 |         getLayer()->sidebandStream = stream->handle(); | 
 |     } | 
 |     virtual void setBuffer(const sp<GraphicBuffer>& buffer) { | 
 |         if (buffer == 0 || buffer->handle == 0) { | 
 |             getLayer()->compositionType = HWC_FRAMEBUFFER; | 
 |             getLayer()->flags |= HWC_SKIP_LAYER; | 
 |             getLayer()->handle = 0; | 
 |         } else { | 
 |             if (getLayer()->compositionType == HWC_SIDEBAND) { | 
 |                 // If this was a sideband layer but the stream was removed, reset | 
 |                 // it to FRAMEBUFFER. The HWC can change it to OVERLAY in prepare. | 
 |                 getLayer()->compositionType = HWC_FRAMEBUFFER; | 
 |             } | 
 |             getLayer()->handle = buffer->handle; | 
 |         } | 
 |     } | 
 |     virtual void onDisplayed() { | 
 |         getLayer()->acquireFenceFd = -1; | 
 |     } | 
 |  | 
 | protected: | 
 |     // Pointers to the vectors of Region backing-memory held in DisplayData. | 
 |     // Only the Region at mIndex corresponds to this Layer. | 
 |     Vector<Region>* mVisibleRegions; | 
 |     Vector<Region>* mSurfaceDamageRegions; | 
 | }; | 
 |  | 
 | /* | 
 |  * returns an iterator initialized at a given index in the layer list | 
 |  */ | 
 | HWComposer::LayerListIterator HWComposer::getLayerIterator(int32_t id, size_t index) { | 
 |     if (uint32_t(id)>31 || !mAllocatedDisplayIDs.hasBit(id)) { | 
 |         return LayerListIterator(); | 
 |     } | 
 |     DisplayData& disp(mDisplayData[id]); | 
 |     if (!mHwc || !disp.list || index > disp.list->numHwLayers) { | 
 |         return LayerListIterator(); | 
 |     } | 
 |     if (disp.visibleRegions.size() < disp.list->numHwLayers) { | 
 |         disp.visibleRegions.resize(disp.list->numHwLayers); | 
 |     } | 
 |     if (disp.surfaceDamageRegions.size() < disp.list->numHwLayers) { | 
 |         disp.surfaceDamageRegions.resize(disp.list->numHwLayers); | 
 |     } | 
 |     return LayerListIterator(new HWCLayerVersion1(mHwc, disp.list->hwLayers, | 
 |             &disp.visibleRegions, &disp.surfaceDamageRegions), index); | 
 | } | 
 |  | 
 | /* | 
 |  * returns an iterator on the beginning of the layer list | 
 |  */ | 
 | HWComposer::LayerListIterator HWComposer::begin(int32_t id) { | 
 |     return getLayerIterator(id, 0); | 
 | } | 
 |  | 
 | /* | 
 |  * returns an iterator on the end of the layer list | 
 |  */ | 
 | HWComposer::LayerListIterator HWComposer::end(int32_t id) { | 
 |     size_t numLayers = 0; | 
 |     if (uint32_t(id) <= 31 && mAllocatedDisplayIDs.hasBit(id)) { | 
 |         const DisplayData& disp(mDisplayData[id]); | 
 |         if (mHwc && disp.list) { | 
 |             numLayers = disp.list->numHwLayers; | 
 |             if (hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1)) { | 
 |                 // with HWC 1.1, the last layer is always the HWC_FRAMEBUFFER_TARGET, | 
 |                 // which we ignore when iterating through the layer list. | 
 |                 ALOGE_IF(!numLayers, "mDisplayData[%d].list->numHwLayers is 0", id); | 
 |                 if (numLayers) { | 
 |                     numLayers--; | 
 |                 } | 
 |             } | 
 |         } | 
 |     } | 
 |     return getLayerIterator(id, numLayers); | 
 | } | 
 |  | 
 | // Converts a PixelFormat to a human-readable string.  Max 11 chars. | 
 | // (Could use a table of prefab String8 objects.) | 
 | static String8 getFormatStr(PixelFormat format) { | 
 |     switch (format) { | 
 |     case PIXEL_FORMAT_RGBA_8888:    return String8("RGBA_8888"); | 
 |     case PIXEL_FORMAT_RGBX_8888:    return String8("RGBx_8888"); | 
 |     case PIXEL_FORMAT_RGB_888:      return String8("RGB_888"); | 
 |     case PIXEL_FORMAT_RGB_565:      return String8("RGB_565"); | 
 |     case PIXEL_FORMAT_BGRA_8888:    return String8("BGRA_8888"); | 
 |     case HAL_PIXEL_FORMAT_IMPLEMENTATION_DEFINED: | 
 |                                     return String8("ImplDef"); | 
 |     default: | 
 |         String8 result; | 
 |         result.appendFormat("? %08x", format); | 
 |         return result; | 
 |     } | 
 | } | 
 |  | 
 | void HWComposer::dump(String8& result) const { | 
 |     Mutex::Autolock _l(mDisplayLock); | 
 |     if (mHwc) { | 
 |         result.appendFormat("Hardware Composer state (version %08x):\n", hwcApiVersion(mHwc)); | 
 |         result.appendFormat("  mDebugForceFakeVSync=%d\n", mDebugForceFakeVSync); | 
 |         for (size_t i=0 ; i<mNumDisplays ; i++) { | 
 |             const DisplayData& disp(mDisplayData[i]); | 
 |             if (!disp.connected) | 
 |                 continue; | 
 |  | 
 |             const Vector< sp<Layer> >& visibleLayersSortedByZ = | 
 |                     mFlinger->getLayerSortedByZForHwcDisplay(i); | 
 |  | 
 |  | 
 |             result.appendFormat("  Display[%zd] configurations (* current):\n", i); | 
 |             for (size_t c = 0; c < disp.configs.size(); ++c) { | 
 |                 const DisplayConfig& config(disp.configs[c]); | 
 |                 result.appendFormat("    %s%zd: %ux%u, xdpi=%f, ydpi=%f" | 
 |                         ", refresh=%" PRId64 ", colorTransform=%d\n", | 
 |                         c == disp.currentConfig ? "* " : "", c, | 
 |                         config.width, config.height, config.xdpi, config.ydpi, | 
 |                         config.refresh, config.colorTransform); | 
 |             } | 
 |  | 
 |             if (disp.list) { | 
 |                 result.appendFormat( | 
 |                         "  numHwLayers=%zu, flags=%08x\n", | 
 |                         disp.list->numHwLayers, disp.list->flags); | 
 |  | 
 |                 result.append( | 
 |                         "    type   |  handle  | hint | flag | tr | blnd |   format    |     source crop (l,t,r,b)      |          frame         | name \n" | 
 |                         "-----------+----------+------+------+----+------+-------------+--------------------------------+------------------------+------\n"); | 
 |                 //      " _________ | ________ | ____ | ____ | __ | ____ | ___________ |_____._,_____._,_____._,_____._ |_____,_____,_____,_____ | ___... | 
 |                 for (size_t i=0 ; i<disp.list->numHwLayers ; i++) { | 
 |                     const hwc_layer_1_t&l = disp.list->hwLayers[i]; | 
 |                     int32_t format = -1; | 
 |                     String8 name("unknown"); | 
 |  | 
 |                     if (i < visibleLayersSortedByZ.size()) { | 
 |                         const sp<Layer>& layer(visibleLayersSortedByZ[i]); | 
 |                         const sp<GraphicBuffer>& buffer( | 
 |                                 layer->getActiveBuffer()); | 
 |                         if (buffer != NULL) { | 
 |                             format = buffer->getPixelFormat(); | 
 |                         } | 
 |                         name = layer->getName(); | 
 |                     } | 
 |  | 
 |                     int type = l.compositionType; | 
 |                     if (type == HWC_FRAMEBUFFER_TARGET) { | 
 |                         name = "HWC_FRAMEBUFFER_TARGET"; | 
 |                         format = disp.format; | 
 |                     } | 
 |  | 
 |                     static char const* compositionTypeName[] = { | 
 |                             "GLES", | 
 |                             "HWC", | 
 |                             "BKGND", | 
 |                             "FB TARGET", | 
 |                             "SIDEBAND", | 
 |                             "HWC_CURSOR", | 
 |                             "UNKNOWN"}; | 
 |                     if (type >= NELEM(compositionTypeName)) | 
 |                         type = NELEM(compositionTypeName) - 1; | 
 |  | 
 |                     String8 formatStr = getFormatStr(format); | 
 |                     if (hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_3)) { | 
 |                         result.appendFormat( | 
 |                                 " %9s | %08" PRIxPTR " | %04x | %04x | %02x | %04x | %-11s |%7.1f,%7.1f,%7.1f,%7.1f |%5d,%5d,%5d,%5d | %s\n", | 
 |                                         compositionTypeName[type], | 
 |                                         intptr_t(l.handle), l.hints, l.flags, l.transform, l.blending, formatStr.string(), | 
 |                                         l.sourceCropf.left, l.sourceCropf.top, l.sourceCropf.right, l.sourceCropf.bottom, | 
 |                                         l.displayFrame.left, l.displayFrame.top, l.displayFrame.right, l.displayFrame.bottom, | 
 |                                         name.string()); | 
 |                     } else { | 
 |                         result.appendFormat( | 
 |                                 " %9s | %08" PRIxPTR " | %04x | %04x | %02x | %04x | %-11s |%7d,%7d,%7d,%7d |%5d,%5d,%5d,%5d | %s\n", | 
 |                                         compositionTypeName[type], | 
 |                                         intptr_t(l.handle), l.hints, l.flags, l.transform, l.blending, formatStr.string(), | 
 |                                         l.sourceCrop.left, l.sourceCrop.top, l.sourceCrop.right, l.sourceCrop.bottom, | 
 |                                         l.displayFrame.left, l.displayFrame.top, l.displayFrame.right, l.displayFrame.bottom, | 
 |                                         name.string()); | 
 |                     } | 
 |                 } | 
 |             } | 
 |         } | 
 |     } | 
 |  | 
 |     if (mHwc && mHwc->dump) { | 
 |         const size_t SIZE = 4096; | 
 |         char buffer[SIZE]; | 
 |         mHwc->dump(mHwc, buffer, SIZE); | 
 |         result.append(buffer); | 
 |     } | 
 | } | 
 |  | 
 | // --------------------------------------------------------------------------- | 
 |  | 
 | HWComposer::VSyncThread::VSyncThread(HWComposer& hwc) | 
 |     : mHwc(hwc), mEnabled(false), | 
 |       mNextFakeVSync(0), | 
 |       mRefreshPeriod(hwc.getRefreshPeriod(HWC_DISPLAY_PRIMARY)) | 
 | { | 
 | } | 
 |  | 
 | void HWComposer::VSyncThread::setEnabled(bool enabled) { | 
 |     Mutex::Autolock _l(mLock); | 
 |     if (mEnabled != enabled) { | 
 |         mEnabled = enabled; | 
 |         mCondition.signal(); | 
 |     } | 
 | } | 
 |  | 
 | void HWComposer::VSyncThread::onFirstRef() { | 
 |     run("VSyncThread", PRIORITY_URGENT_DISPLAY + PRIORITY_MORE_FAVORABLE); | 
 | } | 
 |  | 
 | bool HWComposer::VSyncThread::threadLoop() { | 
 |     { // scope for lock | 
 |         Mutex::Autolock _l(mLock); | 
 |         while (!mEnabled) { | 
 |             mCondition.wait(mLock); | 
 |         } | 
 |     } | 
 |  | 
 |     const nsecs_t period = mRefreshPeriod; | 
 |     const nsecs_t now = systemTime(CLOCK_MONOTONIC); | 
 |     nsecs_t next_vsync = mNextFakeVSync; | 
 |     nsecs_t sleep = next_vsync - now; | 
 |     if (sleep < 0) { | 
 |         // we missed, find where the next vsync should be | 
 |         sleep = (period - ((now - next_vsync) % period)); | 
 |         next_vsync = now + sleep; | 
 |     } | 
 |     mNextFakeVSync = next_vsync + period; | 
 |  | 
 |     struct timespec spec; | 
 |     spec.tv_sec  = next_vsync / 1000000000; | 
 |     spec.tv_nsec = next_vsync % 1000000000; | 
 |  | 
 |     int err; | 
 |     do { | 
 |         err = clock_nanosleep(CLOCK_MONOTONIC, TIMER_ABSTIME, &spec, NULL); | 
 |     } while (err<0 && errno == EINTR); | 
 |  | 
 |     if (err == 0) { | 
 |         mHwc.mEventHandler.onVSyncReceived(0, next_vsync); | 
 |     } | 
 |  | 
 |     return true; | 
 | } | 
 |  | 
 | HWComposer::DisplayData::DisplayData() | 
 | :   configs(), | 
 |     currentConfig(0), | 
 |     format(HAL_PIXEL_FORMAT_RGBA_8888), | 
 |     connected(false), | 
 |     hasFbComp(false), hasOvComp(false), | 
 |     capacity(0), list(NULL), | 
 |     framebufferTarget(NULL), fbTargetHandle(0), | 
 |     lastRetireFence(Fence::NO_FENCE), lastDisplayFence(Fence::NO_FENCE), | 
 |     outbufHandle(NULL), outbufAcquireFence(Fence::NO_FENCE), | 
 |     events(0) | 
 | {} | 
 |  | 
 | HWComposer::DisplayData::~DisplayData() { | 
 |     free(list); | 
 | } | 
 |  | 
 | // --------------------------------------------------------------------------- | 
 | }; // namespace android |